CN111579265A - Static test device for researching collapse resistance of space steel frame composite beam column structure - Google Patents
Static test device for researching collapse resistance of space steel frame composite beam column structure Download PDFInfo
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- CN111579265A CN111579265A CN202010442536.4A CN202010442536A CN111579265A CN 111579265 A CN111579265 A CN 111579265A CN 202010442536 A CN202010442536 A CN 202010442536A CN 111579265 A CN111579265 A CN 111579265A
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Abstract
The invention discloses a static test device for researching collapse resistance of a space steel frame combined beam column structure, which comprises an A-shaped support member, an all-length ground beam, a left portal frame, a right portal frame, a portal frame cross beam, a hydraulic servo actuator, a combined inner column and a second A-shaped support claw-shaped outer hoop, wherein the A-shaped support member comprises a first A-shaped support, an all-length ground beam and a second A-shaped support, a first cross-shaped ground beam is arranged on the front side of the all-length ground beam, a second cross-shaped ground beam is arranged on the rear side of the all-length ground beam, a third cross-shaped ground beam is arranged on the left side of the all-length ground beam, and a fourth cross-shaped ground beam is arranged on the right side of the all-length ground beam.
Description
Technical Field
The invention relates to a static test device, in particular to a static test device for researching collapse resistance of a space steel frame composite beam and column structure.
Background
With the development of society, the steel structure has the advantages of high strength, strong plasticity and toughness, light manufacture, short construction period and the like, so that the steel structure is more and more widely applied. Meanwhile, people put forward higher requirements on the safety and robustness of the structure, on the basis of meeting the traditional design, some important newly-built building structures are required to resist continuous collapse under the action of accidental loads (impact, explosion and the like), the anti-continuous collapse evaluation is carried out on the existing building structures, the anti-collapse capability of the structures is improved through structural measures or structural redundancy is increased, the large-area collapse of the structures is prevented from being continuously damaged, so that the anti-collapse performance of the space steel frame combined beam column structure needs to be subjected to static performance tests, however, in the test process of the prior art, the problem of incomplete load transmission caused by instability of an actuator at the end part is easy to occur, and the test result is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a static test device for researching the collapse resistance of a space steel frame composite beam and column structure, which can effectively avoid the problem of incomplete load transmission caused by instability of the end part of an actuator.
In order to achieve the purpose, the static test device for researching the collapse resistance of the space steel frame combined beam and column structure comprises an A-shaped support member, an all-length ground beam, a left portal frame, a right portal frame, a portal frame cross beam, a hydraulic servo actuator, a combined inner column and a second A-shaped support claw-shaped outer hoop, wherein the A-shaped support member comprises a first A-shaped support, an all-length ground beam and a second A-shaped support, a first cross-shaped ground beam is arranged on the front side of the all-length ground beam, a second cross-shaped ground beam is arranged on the rear side of the all-length ground beam, a third cross-shaped ground beam is arranged on the left side of the all-length ground beam, and a fourth cross-shaped ground beam is arranged on the right side of the all-length ground beam;
the thirty-fourth ground beam, the forty-fourth ground beam, the full-length ground beam, the left door frame and the right door frame are all positioned on the ground;
a first C-shaped portal beam and a plurality of first transverse beams are arranged on the left portal from top to bottom, a second C-shaped portal beam and a plurality of first transverse beams are sequentially arranged on the right portal from top to bottom, the portal beams are fixed between the first C-shaped portal beam and the second C-shaped portal beam, a hydraulic servo actuator is fixed at the bottom of the portal beams, an output shaft of the hydraulic servo actuator is connected with the upper end of the combined inner column, and the lower end of the combined inner column is connected with the central position of the test piece;
the through-length ground beam is positioned between the left door frame and the right door frame, the first A-shaped support is fixed at the front end of the through-length ground beam, and the second A-shaped support is fixed at the rear end of the through-length ground beam;
the claw-shaped outer hoop is sleeved and fixed on the combined inner column, and four ends of the claw-shaped outer hoop are respectively fixed on the first transverse beam, the second transverse beam, the first A-shaped support and the second A-shaped support;
four end parts of the test piece are respectively over against the first transverse beam, the second transverse beam, the first A-shaped support and the second A-shaped support, wherein ear plates are fixed on the four end parts of the test piece, tension and compression sensors are arranged among the first transverse beam, the second transverse beam, the first A-shaped support and the second A-shaped support and the side surfaces of the corresponding ear plates, and a voltage stabilizing jack is arranged between the upper end of each ear plate and the claw-shaped outer hoop;
the thirty-fourth ground beam is positioned between the full-length ground beam and the left portal;
the lower extreme of otic placode is articulated mutually between test piece left end portion upper ear plate and the floor beam of thirty font mutually, and the lower extreme of otic placode is articulated mutually between test piece right-hand member upper ear plate and the floor beam of forty font mutually, and the lower extreme of otic placode is articulated mutually between test piece front end portion upper ear plate and the first cross floor beam, and the lower extreme of otic placode is articulated mutually between test piece rear end portion upper ear plate and the floor beam of twenty font mutually.
The front end part of the first cross-shaped ground beam and the claw-shaped outer hoop, the rear end part of the second cross-shaped ground beam and the claw-shaped outer hoop, the right end part of the fourth cross-shaped ground beam and the claw-shaped outer hoop and the left end part of the third cross-shaped ground beam and the left end part of the claw-shaped outer hoop are connected through diagonal draw bars.
The first C-shaped portal frame beam and the left portal frame and the second C-shaped portal frame beam and the right portal frame are connected through long screws.
The portal beam is connected with the first C-shaped portal beam and the second C-shaped portal beam through long screws.
The hydraulic servo actuator is fixed on the gantry beam through a long screw.
The upper end of post is connected with hydraulic servo actuator in the combination through first head board, is connected through second head board between the lower extreme of post and the middle part of test piece in the combination.
Four ends of the claw-shaped outer hoop are connected with the corresponding first A-shaped support, the second A-shaped support, the first transverse beam and the second transverse beam through the parallel end plates.
The tension and compression sensor is connected with the ear plate through a screw and a hinged plate.
The middle part of the left portal frame is connected with the middle part of the right portal frame through the long beam between the portal frames.
The invention has the following beneficial effects:
the static test device for the collapse resistance research of the space steel frame combined beam-column structure is characterized in that when the static test device is in specific operation, a hydraulic servo actuator is fixed on a portal beam, an output shaft of the hydraulic servo actuator is connected with the central position of a test piece through a combined inner column, a claw-shaped outer hoop is sleeved on the combined inner column, the four end parts of the claw-shaped outer hoop are limited through a first transverse beam, a second transverse beam, a first A-shaped support and a second A-shaped support, and when a load is applied, a directional advancing track is provided for the combined inner column through the claw-shaped outer hoop so as to guarantee the vertical loading of the hydraulic servo actuator, avoid the out-of-plane instability and effectively avoid the problem of incomplete load transmission caused by the instability of the end parts of the actuator.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a front view of the present invention.
Wherein, 1a is a left portal, 1b is a right portal, 2a is a first C-shaped portal beam, 2b is a second C-shaped portal beam, 3 is a portal beam, 4 is a portal long beam, 5 is a hydraulic servo actuator, 6a is a first transverse beam, 6b is a second transverse beam, 7a is a first A-shaped support, 8a is a first cross-shaped ground beam, 8C is a thirty-shaped ground beam, 8d is a forty-shaped ground beam, 9 is a full-length ground beam, 10 is a combined inner column, 11 is a claw-shaped outer hoop, 12 is a test piece, 13 is a diagonal draw bar, 14 is a voltage-stabilizing jack, and 15 is a tension-compression sensor.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2, the static test device for researching the collapse resistance of the space steel frame combined beam column structure comprises an a-shaped support member, an all-length ground beam 9, a left portal frame 1a, a right portal frame 1b, a portal frame cross beam 3, a hydraulic servo actuator 5, a combined inner column 10 and a second a-shaped support claw-shaped outer hoop 11, wherein the a-shaped support member comprises a first a-shaped support 7a, an all-length ground beam 9 and a second a-shaped support, a first cross-shaped ground beam 8a is arranged on the front side of the all-length ground beam 9, a second cross-shaped ground beam is arranged on the rear side of the all-length ground beam 9, a thirty-shaped ground beam 8c is arranged on the left side of the all-length ground beam 9, and a forty-shaped ground beam 8d is arranged on the right side of the all-length ground beam 9; the thirty-fourth ground beam 8c, the forty-fourth ground beam 8d, the through-length ground beam 9, the left door frame 1a and the right door frame 1b are all positioned on the ground; a first C-shaped portal beam 2a and a plurality of first transverse cross beams 6a are arranged on the left portal 1a from top to bottom, a second C-shaped portal beam 2b and a plurality of first transverse cross beams 6b are sequentially arranged on the right portal 1b from top to bottom, wherein the portal cross beam 3 is fixed between the first C-shaped portal beam 2a and the second C-shaped portal beam 2b, a hydraulic servo actuator 5 is fixed at the bottom of the portal cross beam 3, an output shaft of the hydraulic servo actuator 5 is connected with the upper end of the combined inner column 10, the lower end of the combined inner column 10 is connected with the central position of the test piece 12, and a self-balancing system is formed between the portals; the through-length ground beam 9 is positioned between the left door frame 1a and the right door frame 1b, the first A-shaped support 7a is fixed at the front end of the through-length ground beam 9, and the second A-shaped support is fixed at the rear end of the through-length ground beam 9 so as to provide strong external restraint (similar to a rigid wall surface); the claw-shaped outer hoop 11 is sleeved and fixed on the combined inner column 10, and four ends of the claw-shaped outer hoop 11 are respectively fixed on the first transverse beam 6a, the second transverse beam 6b, the first A-shaped support 7a and the second A-shaped support; four end parts of a test piece 12 are respectively over against a first transverse beam 6a, a second transverse beam 6b, a first A-shaped support 7a and a second A-shaped support, wherein ear plates are fixed at the four end parts of the test piece 12, tension and compression sensors 15 are arranged among the first transverse beam 6a, the second transverse beam 6b, the first A-shaped support 7a, the second A-shaped support and the side surfaces of the corresponding ear plates, a pressure stabilizing jack 14 is arranged between the upper end of each ear plate and a claw-shaped outer hoop, a thirty-shaped ground beam 8c is positioned between a through-length ground beam 9 and a left door frame 1a, and a forty-shaped ground beam 8d is positioned between the through-length ground beam 9 and a right door frame 1 b; the lower extreme of otic placode is articulated mutually between 12 left ends of test pieces portion and the thirty-square shape grade beam 8c, and the lower extreme of otic placode is articulated mutually between 12 right ends of test pieces portion and the forty-square shape grade beam 8d, and the lower extreme of otic placode is articulated mutually between 12 front end of test pieces portion and the first cross-shaped grade beam 8a, and the lower extreme of otic placode is articulated mutually between 12 rear end of test pieces portion and the twenty-square shape grade beam, provides vertical boundary condition for test pieces 12.
The first C-shaped portal beam 2a and the left portal 1a and the second C-shaped portal beam 2b and the right portal 1b are connected through long screws; the gantry beam 3 is connected with the first C-shaped gantry beam 2a and the second C-shaped gantry beam 2b through long screws; the hydraulic servo actuator 5 is fixed on the portal beam 3 through the long screw rod, the bidirectional size of the test piece 12 can be effectively controlled, and the completion of the unequal span substructure test is realized.
The space between the first cross-shaped ground beam 8a and the front end of the claw-shaped outer hoop 11, the space between the second cross-shaped ground beam and the rear end of the claw-shaped outer hoop 11, the space between the fourth cross-shaped ground beam 8d and the right end of the claw-shaped outer hoop 11, and the space between the third cross-shaped ground beam 8c and the left end of the claw-shaped outer hoop 11 are all connected by a diagonal draw bar 13.
In addition, specifically, the upper end of the combined inner column 10 is connected with the hydraulic servo actuator 5 through a first head sealing plate, and the lower end of the combined inner column 10 is connected with the middle part of the test piece 12 through a second head sealing plate; the four ends of the claw-shaped outer hoop 11 are connected with the corresponding first A-shaped support 7a, the second A-shaped support, the first transverse beam 6a and the second transverse beam 6b through the flush end plates; the tension and compression sensor 15 is connected with the ear plate through a screw and a hinged plate; the middle part of the left portal 1a is connected with the middle part of the right portal 1b through a portal long beam 4.
When experimental, exert stable vertical load through hydraulic pressure servo actuator 5, carry out static loading through hydraulic pressure servo actuator 5 to test piece 12, for making up inner prop 10 provides the orientation track that gos forward through the outer hoop 11 of claw shape to guarantee hydraulic pressure servo actuator's vertical loading, avoid the condition of the outer unstability of plane, in addition, can realize the experimental loading of multilayer substructure after the vertical height of adjustment each part, can reuse many times.
Claims (9)
1. A static test device for researching collapse resistance of a space steel frame combined beam and column structure is characterized by comprising an A-shaped support member, a through-length ground beam (9), a left portal frame (1a), a right portal frame (1b), a portal frame cross beam (3), a hydraulic servo actuator (5), a combined inner column (10) and a second A-shaped support claw-shaped outer hoop (11), wherein the A-shaped support member comprises a first A-shaped support (7a), a through-length ground beam (9) and a second A-shaped support, a first cross-shaped ground beam (8a) is arranged on the front side of the through-length ground beam (9), a second cross-shaped ground beam (8c) is arranged on the rear side of the through-length ground beam (9), a third cross-shaped ground beam (8c) is arranged on the left side of the through-length ground beam (9), and a fourth cross-shaped ground beam (8d) is arranged on the right side of the through-length ground beam (9;
the thirty-fourth ground beam (8c), the forty-fourth ground beam (8d), the through-length ground beam (9), the left portal frame (1a) and the right portal frame (1b) are all positioned on the ground;
a first C-shaped portal beam (2a) and a plurality of first transverse beams (6a) are arranged on the left portal (1a) from top to bottom, a second C-shaped portal beam (2b) and a plurality of first transverse beams (6b) are sequentially arranged on the right portal (1b) from top to bottom, wherein the portal beam (3) is fixed between the first C-shaped portal beam (2a) and the second C-shaped portal beam (2b), a hydraulic servo actuator (5) is fixed at the bottom of the portal beam (3), an output shaft of the hydraulic servo actuator (5) is connected with the upper end of a combined inner column (10), and the lower end of the combined inner column (10) is connected with the central position of a test piece (12);
the through-length ground beam (9) is positioned between the left portal frame (1a) and the right portal frame (1b), the first A-shaped support (7a) is fixed at the front end of the through-length ground beam (9), and the second A-shaped support is fixed at the rear end of the through-length ground beam (9);
the claw-shaped outer hoop (11) is sleeved and fixed on the combined inner column (10), and four ends of the claw-shaped outer hoop (11) are respectively fixed on the first transverse beam (6a), the second transverse beam (6b), the first A-shaped support (7a) and the second A-shaped support;
four end parts of the test piece (12) are respectively over against the first transverse beam (6a), the second transverse beam (6b), the first A-shaped support (7a) and the second A-shaped support, wherein ear plates are fixed on the four end parts of the test piece (12), tension and compression sensors (15) are arranged among the first transverse beam (6a), the second transverse beam (6b), the first A-shaped support (7a), the second A-shaped support and the side surfaces of the corresponding ear plates, and a pressure stabilizing jack (14) is arranged between the upper end of each ear plate and the claw-shaped outer hoop;
the thirty-fourth ground beam (8c) is positioned between the through-length ground beam (9) and the left portal (1a), and the forty-fourth ground beam (8d) is positioned between the through-length ground beam (9) and the right portal (1 b);
the lower extreme of otic placode is articulated mutually between test piece (12) left end portion upper ear plate and thirty font grade beam (8c), and the lower extreme of test piece (12) right end portion upper ear plate is articulated mutually between fourth font grade beam (8d), and the lower extreme of otic placode is articulated mutually between test piece (12) front end portion upper ear plate and first cross grade beam (8a), and the lower extreme of test piece (12) rear end portion upper ear plate is articulated mutually between second font grade beam.
2. The static test device for the research on the collapse resistance of the space steel frame composite beam column structure according to claim 1, wherein a space steel frame composite beam column structure between the first cross-shaped ground beam (8a) and the front end of the claw-shaped outer hoop (11), a space steel frame composite beam between the second cross-shaped ground beam and the rear end of the claw-shaped outer hoop (11), a space steel frame composite beam between the fourth cross-shaped ground beam (8d) and the right end of the claw-shaped outer hoop (11), and a space steel frame composite beam between the third cross-shaped ground beam (8c) and the left end of the claw-shaped outer hoop (11) are connected through diagonal draw bars (13).
3. A static test device for researching collapse resistance of a space steel frame combined beam-column structure according to claim 1, wherein the first C-shaped portal beam (2a) and the left portal (1a) and the second C-shaped portal beam (2b) and the right portal (1b) are connected through long screws.
4. The static test device for the research on the collapse resistance of the space steel frame composite beam and column structure according to claim 1, wherein the portal cross beam (3) is connected with the first C-shaped portal beam (2a) and the second C-shaped portal beam (2b) through long screws.
5. A static test device for researching collapse resistance of a space steel frame composite beam and column structure according to claim 1, wherein the hydraulic servo actuator (5) is fixed on the gantry beam (3) through a long screw.
6. A static test device for researching collapse resistance of a space steel frame composite beam and column structure according to claim 1, wherein the upper end of a composite inner column (10) is connected with a hydraulic servo actuator (5) through a first head sealing plate, and the lower end of the composite inner column (10) is connected with the middle part of a test piece (12) through a second head sealing plate.
7. A static test device for researching collapse resistance of a space steel frame composite beam and column structure according to claim 1, wherein four ends of each claw-shaped outer hoop (11) are connected with a corresponding first A-shaped support (7a), a corresponding second A-shaped support, a corresponding first transverse beam (6a) and a corresponding second transverse beam (6b) through flush end plates.
8. The static test device for the research on the collapse resistance of the space steel frame composite beam-column structure according to claim 1, wherein the tension and compression sensor (15) is connected with the ear plate through a screw and a hinged plate.
9. A static test device for researching collapse resistance of a space steel frame composite beam and column structure according to claim 1, wherein the middle part of a left portal frame (1a) is connected with the middle part of a right portal frame (1b) through an inter-portal long beam (4).
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Cited By (1)
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| CN113758738A (en) * | 2021-09-23 | 2021-12-07 | 东南大学 | Self-moving limiting device for collapse resistance test of beam-column structure and using method |
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| CN111579265B (en) | 2022-03-15 |
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